I think the source is missing the Korean language pack... let me look into this.
LOL!
Adrian tested the wallet on several OS versions, so not sure what has happened.
I'll send him an email now so he can look into it.
Why my GBcoin address is square?? LOL
I'm Korean.
I think this situation seems to be the cause of the problem is the font.
And I don't speak english well. sorry~